ios 使用正则表达式

通过NSRegularExpression进行匹配字符串。

正则写的不好，分开几条。

首先替换修改table的width.

接着修改td的高度

最后在td数据上增加 font

在手机上看起来会更美观点。

比较详细点的可以查看 点击打开链接

直接发代码好了

    sHTML = [sHTML stringByReplacingOccurrencesOfString:@"\n\t" withString:@""];    NSError *error = nil;    //width    NSString *sReg = @"width: (\\d+)px;";    NSRegularExpression * reg = [NSRegularExpression regularExpressionWithPattern:sReg                                                                          options:NSRegularExpressionCaseInsensitive                                                                            error:&error];        if (error == nil && reg)    {        NSArray *match = [reg matchesInString:sHTML                                      options:NSMatchingReportProgress                                        range:NSMakeRange(0, sHTML.length)];        if ([match count] > 0)        {            sHTML = [reg stringByReplacingMatchesInString:sHTML                                                  options:NSMatchingReportProgress                                                    range:NSMakeRange(0, sHTML.length)                                             withTemplate:@"width: 640px;"];        }    }        //height    NSString *stdHeight = @"height: (\\d+)px; ";    NSRegularExpression *regHeight = [NSRegularExpression regularExpressionWithPattern:stdHeight                                                                               options:NSRegularExpressionCaseInsensitive                                                                                 error:&error];    if ( error == nil && regHeight)    {        sHTML = [regHeight stringByReplacingMatchesInString:sHTML                                                    options:NSMatchingReportProgress                                                      range:NSMakeRange(0, sHTML.length)                                               withTemplate:@"height: 45px;"];    }        //add font    NSString *sTDReg = @"<td.*>(.*)</td>";    NSRegularExpression *replaceReg = [NSRegularExpression regularExpressionWithPattern:sTDReg                                                                                options:NSRegularExpressionCaseInsensitive                                                                                  error:&error];        NSMutableString *sNewHTML = [NSMutableString stringWithString:sHTML];    if (error == nil && replaceReg )    {        NSArray *match = [replaceReg matchesInString:sHTML                                             options:NSMatchingReportProgress                                               range:NSMakeRange(0, sHTML.length)];        if ([match count] > 0)        {            NSInteger nIndex = 0;            for (NSTextCheckingResult *result in match)            {                   NSString *sString = [sHTML substringWithRange:[result rangeAtIndex:1]];                NSString *sReplaceString = [NSString stringWithFormat:@"<font size=\"6\">%@</font>", sString];                NSRange range = [result rangeAtIndex:1];                [sNewHTML replaceCharactersInRange:NSMakeRange(range.location + nIndex, range.length)                                        withString:sReplaceString];                nIndex += sReplaceString.length - sString.length;            }        }    }        [sNewHTML replaceOccurrencesOfString:@"\t"                              withString:@""                                 options:NSCaseInsensitiveSearch                                   range:NSMakeRange(0, sNewHTML.length)];    CC(@"replace html : %@", sNewHTML);        return sNewHTML;